Advanced Poly-Packaging T-375 User manual

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Document: #HT000129
Document Title: Calibrate Thermocouple
Product(s): T-375
Procedure:
To calibrate a thermocouple after replacement or repair, it is necessary to have
exterior temperature sensor (Fluke Thermocouple Thermometer 51/52 Series II or
equivalent) in order to compare and adjust the temperature readings.
Set the thermometer to the same scale as the Bagger (°F or °C).
Place the temperature sensor probe from the Fluke or equivalent thermometer in
contact with the Heater Bar as close to the point of contact for the Thermocouple
Wire as possible.
Access the Temperature Calibration Screen, by starting at the Main Menu,
proceeding to the Technical Assistance and Bagger Factory Screens.
Press “Temperature Calibration”button on right side of Bagger Factory Settings
screen.

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Follow these steps to calibrate the heater bar:
1. Using a controlled measurement device, clamp the measurement tip or pad
to the heater bar surface as close to the thermocouple connection as
possible.
2. Take the difference between the Current Temperature and the
temperature measured in Step 1 and enter that number in the Adjustment
field.
3. Return to the Temperature Calibration screen to confirm the Current
Temperature matches the Read Out.
Note: If the PLC (Current) temperature is very different from the temperature that
is measured, there may be a problem with the method of measuring the
temperature, a problem with the thermocouple cable or connection, or a
different problem. Please contact APPI Technical Support for assistance before
making any manual temperature adjustments.
Current Temperature will display the current temperature. Compare this to the
temperature displayed on the Fluke Thermometer.

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Read Out: This display shows the difference between the PLC temperature and
the Adjusted Temperature that has been entered manually.
Adjustment
If there is a discrepancy between the readings, press the “Adjustment” button
and enter the correct temperature reading according to the Fluke Thermometer.
For example, if the outside calibration equipment reads 123°F and the bagger
shows 111°F, a value of -12° can be entered into Adjustment, allowing the
variation to be known. By pressing the green “Adjustment” button, a numeric
keypad is accessed where two digits, negative or positive can be entered into this
field.